For comparison, we can replace the FDB temporal loss with the OFB temporal loss to transform the SFN back to the model in [1]}. A typical form of the OFB loss is
\(L_\text{temp} = \frac{1}{2N(T-1)} \sum _{t=1}^{T-1} \left\Vert c_k(\tilde{I}_{t+1}-\omega (\tilde{I}_{t}))\right\Vert _2^2,\) 
